Sardon's Tower is a Fort near Onnet Town. You need at least 300 Kills to enter as Sardon, the sorcerer who possibly built or owns the Fort, demands that many sacrifices. He is not shown on the iPhone version. It's Flag Room is on top of the Tower, but it is difficult to get there because of "Sardon's spell", He placed stone blocks with sharp needles on all 4 sides.
Sardon is also a very important player on iclassic.He is one of the best players in the graalian community! There is someone who said he saw the statues move